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# Application Developer

- **Company:** Mantech International Corporation
- **Location:** Chantilly, VA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, HTML, Java (Programming Language), JavaScript (Programming Language), Cascading Style Sheets (CSS), Code Review, DevOps, Elasticsearch, Hibernate (Java), Java Persistence API, Spring Framework, Object-Relational Mapping, Office Suite, Regression Testing, Web Application Security, Software Deployment, Software Requirements Analysis, Software Systems, SQL Databases, Web Application Frameworks, Git, AngularJS, Integration Tests, Information Technology, Restful APIs
- **Published:** August 3, 2026
- **Apply:** https://www.nettemps.com/us/en/W311C2C7F75A1E948E9.ntap

## About the Role

* High School Diploma/GED with 7+ years of experience in the Information Technology field
 * Strong Java programming/development skills, with hands-on experience
 * Experience with HTML, CSS, JavaScript, and at least one modern Front End framework, preferably Angular
 * Experience with, or knowledge of, the Spring Framework and RESTful services and SQL, ORM libraries such as Hibernate/JPA
 * Experience with Git branching and merging within a team to manage source code

Preferred Qualifications:

 * Strong ability to manage competing priorities and communication to multiple stakeholders
 * Experience with, or knowledge of, Elasticsearch
 * Experience with, or knowledge of, best practices for developing secure web applications

Clearance Requirements:

 * An active TS/SCI with Polygraph

Physical Requirements:

 * Use hands to operate a computer and other office productivity machinery, such as a calculator, copy machine and computer printer.
 * The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
 * Must be able to remain in a stationary position 50% of the time

## Description

The Application Developer will be dedicated Full time to development and enhancement support for existing applications as well as new development., * Designing, programming/developing, and modifying software systems, applications, and tools, both existing and potentially new in the future

 * Analyzing user needs and software requirements to determine feasibility of design within time and cost constraints
 * Collaborating with teammates, other service providers, vendors, and users to develop new program features
 * Developing unit and integration tests, in addition to participating in functional and regression tests to ensure programs will produce the desired results and that instructions are correct
 * Correcting errors by making the appropriate changes and then re-checking the program to ensure the desired result was produced. As well as, reviewing help desk messages periodically and working with other teams to troubleshoot and resolve production issues
 * Participating in code reviews by reviewing and incorporating feedback from teammates as well as providing feedback to others based on existing standards and recommended programming practices.
 * Deploying code to development, test, and production environments using existing DevOps infrastructure/tools


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